of sandycroft



'No. 752,907. PATENTED FEB. 23, 1904. r

P. c. KELLY. TAPE-ET FOR THE SHAFTS 0F ORE STAMP MILLS, 8m.

APPLICATION FILED 0075.16, 1903.

N0 MODEL.

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Patented February 23, 1904.

PATENT OFFICE.

PHILIP COLVILLE KELLY, OF SANDYGROFT, ENGLAND, ASSIGNOR TO THESANDYCROFT FOUNDRY COMPANY, LIMITED, OF SANDYCROFT,

ENGLAND.

TAPPET FOR THE SHAFTS OF ORE STAMP-MILLS, 81-0.

SPECIFICATION forming part of Letters Patent No. 752,907, dated February23, 1904.

Application filed October 16, 1903.

To all whom, it may concern:

Be it known that I, PHILIP CoLvTLLn KELLY, assistant works-manager ofThe Sandycroft Foundry Company, Limited, a subject of His Majesty theKing of Great Britain, residing at Sandycroft, England, have inventedcertain new and useful Improvements in Tappets for the Shafts of OreStamp-Mills and the Like, of which the following is a specification.

This invention relates to tappets for the shafts or stems of orestamp-mills and the like, the object being to provide a tappet which canbe fixed to the stem and be removed therefrom without interfering withany other portion of the mill or in the case of a shaft without removing such shaft.

According to this invention the tappets, which are usually in the formof a cylindrical sleeve, are formed in two sections'one, the larger,being formed with a longitudinal gap at least equal to the diameter ofthe stem or shaft to which it is to be applied, the other or smallersection being formed to fit in and fill the gap in the larger section,the parts being drawn together and to the shaft or stem by cotters orpins.

In the accompanying drawings, Figure 1 is an elevation of a tappet asapplied to the stem of a stamp-mill. Fig. 2 is a sectional plan View ofsame. Fig. 3 is a plan view of the larger section of the tappet; Fig. 4,a like view of the smaller section, and Fig. 5 an elevation of Fig. l.

In said drawings, 1 represents the stem or shaft, 2 the larger sectionof the tappet provided with the gap 3, while 4 represents the smallersection adapted to lit in gap 3 and to be held therein and to the stem 1by means of the cotters or pins 5. The smaller section may have lugs 6 6projecting from same and adapted to seat in recesses 7 7 in the largersection, so as to hold the parts in position for driving the cottersthrough their respective holes in the two sections. It will be seen thatthe smaller section, which is one.

solid piece, is forced against the shaft by the Serial No. 177,253. .(Nomodel.)

cotters, the action of which also draws the larger section onto saidshaft, so that the smaller section not only forms the gate or openingfor introducing the shaft into the tappet, but also provides the lockingdevice for securingsaid tappet thereto, no other devices, such as loosegibs driven up by cotters, being required, so that one part is made todo double duty, with the additional advantage that a larger area of gripis obtained from it than from the usual gib or like part. The largersection comprises also only one solid piece, the size of its gapbeingsuificient, as stated, to allow of the introduction and removal ofthe Shaft.

Having thus described the nature and object of my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. A tappet formed of two sections, the larger having a longitudinal gapat least equal to the diameter of the shaft to which it is to be securedand the smaller section forming the gate being of a size to fit said gapand having a surface shaped to fit the shaft and means carried by saidgate-section for forcing and holding it directly against the shaft.

2. A tappet formed of two solid sections, thelarger having alongitudinal gap at least equal to the diameter of the shaft to which itis to be secured, and a surface shaped to partly embrace said shaft andwhich shaft can be introduced and withdrawn through said opening, thesmaller section being of a size to fit in said gap and having a surfaceshaped to fit all over that part of the shaft it touches, both of saidsections having holes corresponding with each other, and a cotteradapted to seat in said holes and to draw the two sections together soas to grip the shaft between same.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

PHILIP COLVILLE KELLY.

Witnesses:

W. J. Sums,

WM. 0. Prnncn.

